class KPM::PluginsManager

def remove_plugin_identifier_key(plugin_key)
  identifiers = read_plugin_identifiers
  # If key does not already exists we update it, if not nothing to do.
  if identifiers.has_key?(plugin_key)
    identifiers.delete(plugin_key)
    write_plugin_identifiers(identifiers)
  end
  identifiers
end